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MAILBOX-339 Implementing migration to remove UDT primary key
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102 changes: 102 additions & 0 deletions
102
...c/main/java/org/apache/james/mailbox/cassandra/mail/migration/MailboxPathV2Migration.java
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| /**************************************************************** | ||
| * Licensed to the Apache Software Foundation (ASF) under one * | ||
| * or more contributor license agreements. See the NOTICE file * | ||
| * distributed with this work for additional information * | ||
| * regarding copyright ownership. The ASF licenses this file * | ||
| * to you under the Apache License, Version 2.0 (the * | ||
| * "License"); you may not use this file except in compliance * | ||
| * with the License. You may obtain a copy of the License at * | ||
| * * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 * | ||
| * * | ||
| * Unless required by applicable law or agreed to in writing, * | ||
| * software distributed under the License is distributed on an * | ||
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY * | ||
| * KIND, either express or implied. See the License for the * | ||
| * specific language governing permissions and limitations * | ||
| * under the License. * | ||
| ****************************************************************/ | ||
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| package org.apache.james.mailbox.cassandra.mail.migration; | ||
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| import java.util.Optional; | ||
| import java.util.function.Supplier; | ||
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| import javax.inject.Inject; | ||
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| import org.apache.james.backends.cassandra.migration.Migration; | ||
| import org.apache.james.mailbox.cassandra.mail.CassandraIdAndPath; | ||
| import org.apache.james.mailbox.cassandra.mail.CassandraMailboxPathDAOImpl; | ||
| import org.apache.james.mailbox.cassandra.mail.CassandraMailboxPathV2DAO; | ||
| import org.apache.james.task.Task; | ||
| import org.apache.james.task.TaskExecutionDetails; | ||
| import org.slf4j.Logger; | ||
| import org.slf4j.LoggerFactory; | ||
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| public class MailboxPathV2Migration implements Migration { | ||
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| public static class AdditionalInformation implements TaskExecutionDetails.AdditionalInformation { | ||
| private final Supplier<Long> countSupplier; | ||
| private final long initialCount; | ||
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| public AdditionalInformation(Supplier<Long> countSupplier) { | ||
| this.countSupplier = countSupplier; | ||
| this.initialCount = countSupplier.get(); | ||
| } | ||
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| public long getRemainingCount() { | ||
| return countSupplier.get(); | ||
| } | ||
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| public long getInitialCount() { | ||
| return initialCount; | ||
| } | ||
| } | ||
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| public static final Logger LOGGER = LoggerFactory.getLogger(MailboxPathV2Migration.class); | ||
| private final CassandraMailboxPathDAOImpl daoV1; | ||
| private final CassandraMailboxPathV2DAO daoV2; | ||
| private final AdditionalInformation additionalInformation; | ||
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| @Inject | ||
| public MailboxPathV2Migration(CassandraMailboxPathDAOImpl daoV1, CassandraMailboxPathV2DAO daoV2) { | ||
| this.daoV1 = daoV1; | ||
| this.daoV2 = daoV2; | ||
| this.additionalInformation = new AdditionalInformation(() -> daoV1.countAll().join()); | ||
| } | ||
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| @Override | ||
| public Result run() { | ||
| try { | ||
| return daoV1.readAll() | ||
| .join() | ||
| .map(this::migrate) | ||
| .reduce(Result.COMPLETED, Task::combine); | ||
| } catch (Exception e) { | ||
| LOGGER.error("Error while performing migration", e); | ||
| return Result.PARTIAL; | ||
| } | ||
| } | ||
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| public Result migrate(CassandraIdAndPath idAndPath) { | ||
| try { | ||
| daoV2.save(idAndPath.getMailboxPath(), idAndPath.getCassandraId()).join(); | ||
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| daoV1.delete(idAndPath.getMailboxPath()).join(); | ||
| return Result.COMPLETED; | ||
| } catch (Exception e) { | ||
| LOGGER.error("Error while performing migration for path {}", idAndPath.getMailboxPath(), e); | ||
| return Result.PARTIAL; | ||
| } | ||
| } | ||
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| @Override | ||
| public String type() { | ||
| return "Cassandra_mailboxPathV2Migration"; | ||
| } | ||
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| @Override | ||
| public Optional<TaskExecutionDetails.AdditionalInformation> details() { | ||
| return Optional.of(additionalInformation); | ||
| } | ||
| } |
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